Preparation of UH3 by the reaction of U with NH3 or with a mixture of H2 and N2
摘要:
To examine how a high nitrogen activity and high hydrogen activity can be obtained by keeping the extent of dissociation of NH3 below its dissociation equilibrium, reactions of U with static NH3 were carried out at 250 degrees C. The formation of N-rich U2N3+x and that of UH3 are discussed from a thermodynamic point of view. The experimental results suggest, however, that the formation of UH3 must be ascribed to a much lower activation energy for its formation.